Ridley said the Sydney event, in which residents were asked to switch off lights and appliances for one hour, had raised awareness about the problem of global warming while reducing greenhouse gas emissions by conserving energy.

• 瑞德里说，悉尼的“熄灯一小时”活动在节能减排的同时，提高了人们对全球变暖问题的关注意识。活动当天，悉尼市民被要求关闭电灯和电器一小时。